Runner control for glass-grinding machines.



J. H. KUHNS.

RUNNER CONTROL FOR GLASS GRINDING MACHINES.

APPLICATION FILED Aue. I1. |914.

E. l 5 l ,802, Patented Aug. 31, 1915.

2 SHEETS-SHEET l.

' INVNTOR.

I. H. KUHNS. RUNNER CONTROL FOR GLASS GRINDING MACHINES. APPLICATION FILED AUG. I?, 1914. LLLUQ. Patented Aug. 31, 1915.

2 SHEETS-SHEET 2.

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\/\/l'\-NESSESI` INVENTOR.

iinrrnn erafrns ramener y ernten JOHN H. KUI-INS, OF TOLEDO, OHIO, .ASSIGNOR TO EDWARD FORD PLATE GLASS COMPANY, OF TOLEDO, OHIO, A CORORATION OF OHIO.y

RUNNER CONTROL :son GLAss-GRINDING MACHINES.

Specification of Letters Patent.

,Application filed Aug-ust 17, 1914. Serial No. 857,240.

To all whom it may concern Be it known that I, Jol-IN H. KUHNS, a citizen of the United States, and a resident of Toledo, in the county of Lucas and vState of Ohio, have invented a certain new and useful Runner Control for Glass-Grinding Machines; and l do hereby declare the following to be a full,'clear, and exact description of the invention, such as will enable others skilled in the art towhich it apper- Atains to make and usethe same, reference pendent raising and lowering of each runl ner 'relative to the work supporting table thereof, whereby to simplify the construction and enhance thepracticability and commercial value thereof and to place the runner or runners under more perfect control of the operator. l

The invention is fully describedlin the following specification, and while, in its broader aspect, it is capable of embodiment in numerous forms, a preferred embodiment thereof is illustrated. in thev accompanying drawings, in which# Figure 1 is a front elevation of a portion of a machine embodying my invention with the runner lowered in operative relation to the workfsupporting table, and-Fig. 2 is a partial sectional view thereof taken on the line inFig. 1.v y

Referring to the drawings, 1 designates the stationary frame work of the machine, 2 the rotatable work supporting table, which is mounted below said frame work, and 3 a rotatable runner, which is mounted above and may be lowered into contact with work on the table 2 and has work grinding or polishing rotation imparted thereto by the rotation of the table, as is well understood in the art. It is customary to provide two or more runners Sin equidistantly spaced peltion around the axis of rotation of the The runner 3, in the present instance, has

a hollow shaft 4 vaxially rising therefrom `and Journaled for rotary and axial sliding movements in suitable bearings 5 and 6 provided in vertically spaced relation in the frame work l.

Mounted on the frame work 1 over the shaft 4 in any suitable manner, asby restingon and being bolted to cross-beam 7 carried by said frame work, is an open-top cylinder 8 in which a plunger 9 is mounted for vertical reciprocatory movements therein. The

plunger 9 works through a suitable stuffing kbox 10 provided in the upper open endfof the cylinder and has its upper end provided centrally with upstanding ears 9a (Fig. 1), which are pivotally attached, in the present instance, by aV bolt 11, to a cross-head l2. The ends of the cross-head 12 extend beyond the respective sides of the cylinder 8 and are connected, by bolts or suspendingv rods 13, to a cross-head 14, which is mounted below and extends under the cylinder 8. The cross-head 14 or lower portion of the yoke, which is formed by the cross-heads 12 and 14 Patented Aug., 31, 1915, y

and rods 13, is provided with a bearing 15 in which the upper end of the runner-suspending rod 16 is mounted for free rotary movements-` The cross-head 14 is prevented from turning by having its ends projected through registering vertical guide-ways 17 provided in opposite side portions of the cylinder base 8.

The rod 16 has a bearing-collar 18 fixed to the upper end thereof for thrust bearing contact with the upper end of the bearing 15, and the lower end of said rod extends down through the hollow shaft 4 and is ixedly attached to the interior of the runner adjacent to the lower'end of said shaft, as indicated at 19. The rod 16, in the present instance, is provided -at its opposite ends with nuts 20, the upper one of which receives the upward thrust of the bearing-collar 17,

.while the lowerone receives the downward thrust of the runner part 19.

gress Vand egress ofy an operating fluid to'l and from the interior of the cylinder, said pipes .having suitable control valves-23 and 24, respectively. These pipes may lead t0 any suitable source-of fluidpress'u're supply or discharge, as the case may be, .and While it is preferable in practice.y to employ water as the actuating means, compressed air, steam,` oil, or other suitable uid maybe lused,vifl'desired.

1 n around in *factice that'the'io'caung above each runne'rof the control means for the vertical movements thereof,l as herein indicated, 'provides' a substantially direct .Connection between the runner Aand vcontrol means, 'thereby obviating they useoff'connecting levers and links, "which have heretofore beenemployed, y and also "provides `a more substantial 'and commercially "practical apparatus It is also found that therunne'r can be 'adjusted with greaternice'ty 'with re'- lation to 'the table 2i' yThis 'latter feature vis an important one, as'the 'eflicientgrinding or ypolishing Iof fplatefglass requires' either"a verysl'ow continuouslowering'or a' gradual intermittent lowering, of arunnerto4 com- ,pensate for l'the wearing,l y,down glass surface.

A I wish itunderstoody that my .invention is not l limited vtof 'any 'specific construction, ar-

' rangement or fro/rin of' thepartsf except in yso far as suchA limitations 'are'lspecifed fin the 'claimsl' y Having'fthus vdescribed my invention, what Il claim' as new,`and desirel to secure' byuLet'- 1; 'nie manine pf the',ehafactefiieecribed, a runner'mounte'zd for horizontal rotar 'fand verti'cal reciprocatory movements', and 'fluid pressure operated means mounted above and directly 'connected to said runner "for pro- `:ducing the vertical movementthereo'f." .f 'I

l 2. In a Amachine of the'class described,

a horizontally rotatable andl axially vmovable runner, fluid pressureoper'ated means comprisingI a 'cylinder and vertically' movable' plunger mounted over said'frunner`,'and

connecting means between said plunger and runner' for "suspending'o'ne from' ther other vfor vertical *and relative lrotary' movements.

3.' In a machine'of the class described, a rotatable and axially' rmovable runner,v juid pressureoperated means IIlQlIlfed over said runner 'and comprising a stationary cylin- 'down' into der, and a plunger vertically movable in said cylinder, and means directly connecting said plunger and runner and comprising a yoke'having connection with said plunger and extending around :and under the (cylinder, and a suspending `memberconnected at its upper end to said yoke and at its lower end to said runnerand, permitting therrun- .ner to rotate relati-velto the yoke.

4. In a machine of the class described, a rotatable and axially movable runner, Huid operated means centrally mounted over said runner and comprising a cylinder ,anda plunger working one within the other, said cylinder having base portion provided with vertical guide-Ways, a yoke suspended from the top of said plunger and'` having its', lower 'portion extending unde'r'the cylinder'andguided for 'vertical movements by said guide-ways, 'and' a suspending rod conneet-,ed vat its upper end 'to-the'lower portion of 4saidyokeand fat its lower 'end to said runner. 4 f

^ 5. 'In a machine of thefclass described, a

- horizontally rotatable runner',"a hollow shaft projecting upward' fromk said runner and j'o'urnaledi for rotary' and 'axial' movements, and fluidv pressure i'operatedmeans mounted above said shaft and having a part extending downl'through the shaft vandattaehed to the runner for suspending the same, said means being operable to control the vertical movements 'of the runner. if

6. In a machine of the class described', a horizontallyrotatable runner, a hollow shaft projecting 'upward' 'from said 'runner' and mounted forfrota'ry and axial"movements, fluid 'pressure' operated means mounted Vwhollyabovethe 'upper'end of said'slia'ft and havingfa. cyflinderanda plunger,` o ne being vertically movable relative to the other TI 'lpon'v'the admission or discharge of l'fluid pressure from the cylinder, V'and -connection between the y vertically movableportion of 'Said 'means and lsaid `runner'for imparting Vertical movements from one to the other,-

said' connection'having a portion extending y 'said shaft. and' engaged,`to'tl1e run-ner;

7. yIn a machine of 'the' class described,

'an' axially movable and horizontally rotatable runner'having a' hollow shaft extending upward therefrom', bearing means'. for said shaft, fluid controlled means mounted over the upper endof'said shaft'and'having'a cylinder and a plunger 'in-alinement with said shaftgf one" of lwhich 'mounted -and the other being vertically movable 'upon the admission 'to or:i discharge' of fluid from"- the cylinder, a' rconnectionl between y the movable member 1of said 'means andthe runner, 'said connection 'comprising ya supporting part' which is :directly connected tothel movable'member 'of-said means,

'rio

shaft and @taches at iis flower and JLN Ul-if gunner adjacent to the, ower and 01' said zjmessass 5 shank. A? gli 1n testimony where have heaeunz@ MAYWQU,

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